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Quinn science L1
Chemical Bonding
Question | Answer |
---|---|
chemical bonding | the joining of atoms to form new substances |
chemical bond | a force of attraction that holds two atoms together |
valence electrons | the electrons in the outermost energy level of an atom, involved in forming chemical bonds |
ionic bond | the force of attraction between oppositely charged ions, metal and a nonmetal |
ions | charged particles that form during chemical changes when one or more valence electrons transfer from one atom to another |
crystal lattice | a repeating three dimensional pattern of ions |
covalent bond | the force of attraction between the nuclei of atoms and the electrons shared by the atoms, two non metals |
metallic bond | the force of attraction between positively charged metal ion and the electrons in a metal, two metals |
number of valence electrons in groups one and two | same as their group number |
number of valence electrons in groups three through twelve | one or two |
number of valence electrons in groups thirteen through eighteen | subtract ten from their group number |
negative ion | when an atom gains electrons in ionic bonding |
positive ion | when an atom loses electrons in ionic bonding |
what group has a complete set of valence electrons | 18 |
molecule | a neutral group of atoms held together by covalent bonds |